DE112014006945T5 - oil pan - Google Patents

Abstract

A double sump oil pan has a separator made of plastic that divides an interior of the oil pan into an inner sump and an outer sump, a plate, and an elastically deformable sealing member attached to the plate. The sealing member is in close contact with the inner wall of the sump and seals the outer sump. The plate and the separator are fixed to each other.

Description

Technical area

The present invention relates to a double sump oil sump having an inner sump and an outer sump.

State of the art

Commonly, double sump oil pans have been known which have a separator installed therein to divide the interior into an inner sump and an outer sump. For example, reference is made to Patent Document 1. In such an oil pan, only the oil stored in the inner sump is circulated after the engine is started to quickly raise the temperature of the oil, thereby reducing friction on parts requiring lubrication.

Document of the prior art

Patent document

• Patent Document 1: Japanese Patent Laid-Open No. 2011-226394

Summary of the invention

Problems that the invention is able to solve

When oil is used to lubricate an internal combustion engine, the oil temperature is increased. The heated oil then drips down the inner wall of the cylinder block. As such drooping oil enters the outer sump, the amount of oil returned to the inner sump is reduced. This delays an increase in the temperature of the oil in the inner sump.

Accordingly, it is an object of the present invention to provide an oil pan which restricts oil running down the inner wall of a cylinder block from entering an outer sump, thereby allowing the oil in the inner sump to be easily heated.

Means of solving the problems

In order to achieve the foregoing object, and in accordance with one aspect of the present invention, there is provided a double sump oil sump having a separator made of plastic which divides an interior of the sump into an inner sump and an outer sump, a plate and an elastically deformable sealing member attached to the plate. The sealing member is in intimate contact with an inner wall of the oil pan, thereby sealing the outer sump. The plate and the separator or the separating device are fixed to each other.

According to the foregoing configuration, when the separator is installed in the oil pan, the sealing member is elastically deformed to be in close contact with the inner wall of the oil pan, thereby sealing the outer sump. This restricts oil dripping down the inner wall of the cylinder block from entering the outer sump, thereby allowing the oil in the inner sump to be easily heated.

Depending on the shape or size of the separator, the sealing member may not be directly attached to the separator in some cases. In this regard, the configuration described above has a plate smaller in size than the separator and easy to handle, and the sealing member for sealing the outer sump is attached to the plate. The plate with the sealing member is fixed to the separator. This allows the sealing member to be easily attached to the separator.

In such a configuration, the separator preferably has a projection and the plate preferably has an insertion hole that receives the projection. In addition, the plate and the separator are preferably fixed to each other by heat-shrinking the projection. This allows the sealing member to be disposed at a desired position on the separator.

The sealing component of the double sump oil pan is preferably a rubber lip. The rubber lip is slightly elastically deformed to conform to the shape of the inner wall of the outer sump, thereby continuing to come into close contact with the inner wall. This further improves the sealing property of the outer sump.

In the double sump oil pan, the plate preferably has a ring-like shape, and the sealing member is preferably attached to an entire perimeter of the plate. This improves the sealing property of the outer oil sump, thereby allowing the oil to be even more easily heated.

Brief description of the drawings

1 is a cross-sectional view schematically illustrating the structure of the oil pan; and

2 is a cross-sectional view schematically illustrating an oil flow in the oil pan.

Ways of carrying out the invention

A double sump oil pan according to an embodiment will now be described with reference to FIG 1 and 2 described.

As in 1 is shown has a cylinder block 1 an internal combustion engine, a crankshaft 2 and an oil drain passage 3 on. An oil pan 4 is at the bottom of the cylinder block 1 appropriate. The oil pan 4 has such a shape that the distance between the opposite surfaces of an inner wall 10 decreases towards the lower end. A box-shaped separator or a box-shaped separator 5 with an open top end is in the oil pan 4 Installed. The separator 5 is made of plastic or plastic.

The separator 5 shares the interior of the oil pan 4 into an inner swamp 6 and an outer swamp 7 , The inner marsh 6 houses an oil strainer 8th that pumps stored oil up. The separator 5 has through holes 9 in the sidewalls, around the inner marsh 6 and the outer swamp 7 to connect with each other. The separator 5 also has a flange 11 from the upper end, that is, to the inner wall 10 the oil pan 4 protruding outwards. The flange 11 extends over the entire perimeter or circumference of the separator 5 , The flange 11 has tabs 12 , which are arranged at intervals along the perimeter.

As in 2 shown is the separator 5 at the upper end of an annular plate 13 , which is made of plastic or plastic and extends over the entire perimeter. A sealing component that has a rubber lip 14 has is on the outside of the plate 13 attached to itself over the entire perimeter or perimeter of the plate 13 to extend. The rubber lip 14 extends from the plate 13 out up. The upper part of the rubber lip 14 is in close contact with the inner wall 10 the oil pan 4 , This seals the outer swamp 7 from. The rubber lip 14 can at the plate 13 for example, by injection molding or injection molding on the plate 13 be attached.

The plate 13 has insertion holes 15 , which are arranged at intervals along the perimeter or the circumference. The insertion holes 15 each take one of the projections 12 of the separator 5 on. The projections 12 are heat shrunk so that the distal ends of the projections 12 and the upper surface of the flange 11 the plate 13 hold, so the plate 13 on the separator 5 is fixed.

An operation of the oil pan 4 The structure described above will now be described.

After the machine is started, the oil pump is activated to remove oil from the inner sump 6 over the oil strainer 8th pump upwards. The pumped oil lubricates engine components and heats up. After that, the oil becomes the oil sump 4 over the oil drain passage 3 and an oil passage inside the crankshaft 2 is formed, to the oil pan 4 recycled. Some of the oil is made by turning the crankshaft 3 scatters and drips the inner wall of the cylinder block 1 down to the sump 4 to be returned.

In the present embodiment, the rubber lip seals 14 standing at the plate 13 attached, the outer swamp 7 from. Therefore, as in 2 is shown, oil flows to the inner wall of the cylinder block 1 dripped down, not in the outer swamp 7 but enters the inner marsh 6 one. As a result, the temperature of the oil in the inner sump becomes 6 increased quickly.

When the machine is stopped, an upward pumping of the oil is stopped, and oil that has lubricated machine components becomes the inner sump 6 recycled. This increases the level of oil in the inner sump 6 is stored, so some of the stored oil through the through holes 9 to the outer swamp 7 flows. Because oil from the inner marsh 6 to the outer swamp 7 flows and is distributed, a deterioration of the oil in the inner swamp 6 reduced.

Depending on the shape or size of the separator 5 can the rubber lip 14 in some cases not directly on the separator 5 be attached. In this regard, the present embodiment has the plate 13 that are smaller in size than the separator 5 is and easy to handle, on and the rubber lip 14 for sealing the outer sump 7 gets to the plate 13 attached. The plate 13 is on the separator 5 fixed by heat shrinking. This allows the rubber lip 14 , easily at a desired position on the separator 5 to be attached.

If the separator 5 on which the plate 13 is fixed to the sump 4 is attached, the separator 5 in the oil pan 4 used in such a way that the rubber lip 14 at the plate 13 is elastically deformed to be in close contact with the inner wall 10 the oil pan 4 to be. The oil pan 4 has such a shape that the distance between the opposite surfaces of the inner wall 10 decreases towards the lower end. Therefore, by pressing the separator 5 to the bottom of the oil pan 4 the rubber lip 14 causes the inner wall 10 the oil pan 4 to touch firmly. As a result, the separator is the separator 5 at the oil pan 4 attached while the outer oil sump 7 is sealed.

• (1) Öl, das die Innenwand des Zylinderblocks 1 herabtropft, wird darin beschränkt, in den äußeren Sumpf 7 einzutreten, sodass es dem Öl in dem inneren Sumpf 6 ermöglicht ist, leicht erwärmt zu werden. Die vorliegende Ausführungsform weist die Platte 13 auf, die in einer Größe kleiner als der Separator 5 ist und leicht zu handhaben ist, und die Gummilippe 14 zum Abdichten des äußeren Sumpfs 7 ist an der Platte 13 angebracht. Die Platte 13 ist an dem Separator 5 fixiert. Dies ermöglicht es der Gummilippe 14, leicht an dem Separator 5 angebracht zu werden.
• (2) Die Platte 13 ist an dem Separator 5 durch ein Wärmeschrumpfen fixiert. Dies ermöglicht es der Gummilippe 14, leicht an einer gewünschten Position an dem Separator 5 angeordnet zu werden, und vereinfacht die Arbeit.
• (3) Die Gummilippe (14), welche den äußeren Sumpf 7 abdichtet, wird leicht elastisch deformiert, um der Form der Innenwand 10 der Ölwanne 4 zu entsprechen. Dies ermöglicht es der Gummilippe 14 und der Innenwand 10, einander fest zu berühren, wodurch ferner die Dichteigenschaft des äußeren Sumpfs 7 verbessert wird.
• (4) Die Platte 13 hat eine ringartige Form und die Gummilippe 14 ist an dem gesamten Perimeter beziehungsweise Umfang der Platte 13 angebracht. Die Gummilippe 14 ist in engem Kontakt mit der Innenwand 10 der Ölwanne 4. Dies verbessert die Dichteigenschaft des äußeren Sumpfs 7, wodurch es dem Öl ermöglicht ist, noch leichter erwärmt zu werden.

The above-described embodiment has the following advantages.

• (1) Oil, which is the inner wall of the cylinder block 1 is dripped down into the outer swamp 7 enter, leaving it to the oil in the inner marsh 6 is allowed to be heated easily. The present embodiment has the plate 13 on that in a size smaller than the separator 5 is and easy to handle, and the rubber lip 14 for sealing the outer sump 7 is at the plate 13 appropriate. The plate 13 is on the separator 5 fixed. This allows the rubber lip 14 , easy on the separator 5 to be attached.
• (2) The plate 13 is on the separator 5 fixed by heat shrinking. This allows the rubber lip 14 , easily at a desired position on the separator 5 to be arranged, and simplifies the work.
• (3) The rubber lip ( 14 ), which is the outer swamp 7 seals, is slightly elastically deformed to the shape of the inner wall 10 the oil pan 4 correspond to. This allows the rubber lip 14 and the inner wall 10 to touch each other firmly, thereby further enhancing the sealing property of the outer sump 7 is improved.
• (4) The plate 13 has a ring-like shape and the rubber lip 14 is at the entire perimeter or perimeter of the plate 13 appropriate. The rubber lip 14 is in close contact with the inner wall 10 the oil pan 4 , This improves the sealing property of the outer sump 7 , which allows the oil to be heated even more easily.

The above embodiment may be modified as follows.

In the embodiment shown above, the rubber lip 14 at the perimeter of the plate 13 appropriate. However, as long as the oil sump 7 Can be sealed is the way in which the rubber lip 14 is attached, not limited.

The plate 13 does not necessarily have an annular shape, but may be divided into several parts. In this case, a rubber lip is attached to each of the pieces.

In the illustrated embodiment, a rubber lip is a sealing member for sealing the outer sump 7 used. However, other types of sealing components, such as a liquid gasket, may be used. This configuration also achieves the same advantages as the advantages (1) and (2) described above.

In the illustrated embodiment, plastic is considered the material of the plate 13 used. However, the plate can 13 be made of a different material, such as metal.

In the embodiment shown above, the separator is 5 and the plate 13 fixed to each other by heat shrinking. However, if metal is the material of the plate 13 used, the plate can 13 be mechanically forged to the separator 5 to be fixed.

In the illustrated embodiment, the separator 5 and the plate 13 fixed to each other by shrinking. However, the separator can 5 and the plate 13 be fixed to each other by other methods. For example, an adhesive may be applied to the separator 5 and the plate 13 be applied and the separator 5 and the plate 13 can be glued together. The separator 5 and the plate 13 can also be welded together. Alternatively, the separator 5 and the plate 13 attached to each other with screws or bolts. As other methods of fixing, the projections 12 of the separator 5 be formed with hooks and the plate 13 can on the separator 5 be fixed by a snap fit. Furthermore, the separator 5 and the plate 13 be assembled with clips or brackets.

These configurations achieve at least the same advantages as the advantage (1).

Claims (4)

A dual sump oil sump comprising: a separator made of plastic that divides an interior of the sump into an inner sump and an outer sump; a plate; and an elastically deformable sealing member attached to the plate, wherein the sealing member is in intimate contact with an inner wall of the oil pan, whereby the outer sump is sealed, and the plate and the separator are fixed to each other.  Double sump oil pan according to claim 1, wherein the separator has a lead, the plate has an insertion hole that receives the projection, and the plate and the separator are fixed to each other by heat-shrinking or heat-shaping the projection, respectively.  Double sump oil pan according to claim 1 or 2, wherein the sealing member is a rubber lip.  A double sump oil pan according to any one of claims 1 to 3, wherein the plate has a ring-like shape, and the sealing member is attached to an entire circumference of the plate.

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